1 // SPDX-License-Identifier: GPL-2.0
3 * Copyright (c) 2000-2005 Silicon Graphics, Inc.
6 #ifndef __XFS_TYPES_H__
7 #define __XFS_TYPES_H__
9 typedef uint32_t prid_t; /* project ID */
11 typedef uint32_t xfs_agblock_t; /* blockno in alloc. group */
12 typedef uint32_t xfs_rgblock_t; /* blockno in realtime group */
13 typedef uint32_t xfs_agino_t; /* inode # within allocation grp */
14 typedef uint32_t xfs_extlen_t; /* extent length in blocks */
15 typedef uint32_t xfs_rtxlen_t; /* file extent length in rtextents */
16 typedef uint32_t xfs_agnumber_t; /* allocation group number */
17 typedef uint32_t xfs_rgnumber_t; /* realtime group number */
18 typedef uint64_t xfs_extnum_t; /* # of extents in a file */
19 typedef uint32_t xfs_aextnum_t; /* # extents in an attribute fork */
20 typedef int64_t xfs_fsize_t; /* bytes in a file */
21 typedef uint64_t xfs_ufsize_t; /* unsigned bytes in a file */
23 typedef int32_t xfs_suminfo_t; /* type of bitmap summary info */
24 typedef uint32_t xfs_rtsumoff_t; /* offset of an rtsummary info word */
25 typedef uint32_t xfs_rtword_t; /* word type for bitmap manipulations */
27 typedef int64_t xfs_lsn_t; /* log sequence number */
28 typedef int64_t xfs_csn_t; /* CIL sequence number */
30 typedef uint32_t xfs_dablk_t; /* dir/attr block number (in file) */
31 typedef uint32_t xfs_dahash_t; /* dir/attr hash value */
33 typedef uint64_t xfs_fsblock_t; /* blockno in filesystem (agno|agbno) */
34 typedef uint64_t xfs_rfsblock_t; /* blockno in filesystem (raw) */
35 typedef uint64_t xfs_rtblock_t; /* extent (block) in realtime area */
36 typedef uint64_t xfs_fileoff_t; /* block number in a file */
37 typedef uint64_t xfs_filblks_t; /* number of blocks in a file */
38 typedef uint64_t xfs_rtxnum_t; /* rtextent number */
39 typedef uint64_t xfs_rtbxlen_t; /* rtbitmap extent length in rtextents */
41 typedef int64_t xfs_srtblock_t; /* signed version of xfs_rtblock_t */
44 * New verifiers will return the instruction address of the failing check.
45 * NULL means everything is ok.
47 typedef void * xfs_failaddr_t;
50 * Null values for the types.
52 #define NULLFSBLOCK ((xfs_fsblock_t)-1)
53 #define NULLRFSBLOCK ((xfs_rfsblock_t)-1)
54 #define NULLRTBLOCK ((xfs_rtblock_t)-1)
55 #define NULLFILEOFF ((xfs_fileoff_t)-1)
57 #define NULLAGBLOCK ((xfs_agblock_t)-1)
58 #define NULLRGBLOCK ((xfs_rgblock_t)-1)
59 #define NULLAGNUMBER ((xfs_agnumber_t)-1)
60 #define NULLRGNUMBER ((xfs_rgnumber_t)-1)
62 #define NULLCOMMITLSN ((xfs_lsn_t)-1)
64 #define NULLFSINO ((xfs_ino_t)-1)
65 #define NULLAGINO ((xfs_agino_t)-1)
68 * Minimum and maximum blocksize and sectorsize.
69 * The blocksize upper limit is pretty much arbitrary.
70 * The sectorsize upper limit is due to sizeof(sb_sectsize).
71 * CRC enable filesystems use 512 byte inodes, meaning 512 byte block sizes
74 #define XFS_MIN_BLOCKSIZE_LOG 9 /* i.e. 512 bytes */
75 #define XFS_MAX_BLOCKSIZE_LOG 16 /* i.e. 65536 bytes */
76 #define XFS_MIN_BLOCKSIZE (1 << XFS_MIN_BLOCKSIZE_LOG)
77 #define XFS_MAX_BLOCKSIZE (1 << XFS_MAX_BLOCKSIZE_LOG)
78 #define XFS_MIN_CRC_BLOCKSIZE (1 << (XFS_MIN_BLOCKSIZE_LOG + 1))
79 #define XFS_MIN_SECTORSIZE_LOG 9 /* i.e. 512 bytes */
80 #define XFS_MAX_SECTORSIZE_LOG 15 /* i.e. 32768 bytes */
81 #define XFS_MIN_SECTORSIZE (1 << XFS_MIN_SECTORSIZE_LOG)
82 #define XFS_MAX_SECTORSIZE (1 << XFS_MAX_SECTORSIZE_LOG)
85 * Inode fork identifiers.
87 #define XFS_STAGING_FORK (-1) /* fake fork for staging a btree */
88 #define XFS_DATA_FORK (0)
89 #define XFS_ATTR_FORK (1)
90 #define XFS_COW_FORK (2)
92 #define XFS_WHICHFORK_STRINGS \
93 { XFS_STAGING_FORK, "staging" }, \
94 { XFS_DATA_FORK, "data" }, \
95 { XFS_ATTR_FORK, "attr" }, \
96 { XFS_COW_FORK, "cow" }
99 * Min numbers of data/attr fork btree root pointers.
105 * MAXNAMELEN is the length (including the terminating null) of
106 * the longest permissible file (component) name.
108 #define MAXNAMELEN 256
111 * This enum is used in string mapping in xfs_trace.h; please keep the
112 * TRACE_DEFINE_ENUMs for it up to date.
115 XFS_LOOKUP_EQi, XFS_LOOKUP_LEi, XFS_LOOKUP_GEi
118 #define XFS_AG_BTREE_CMP_FORMAT_STR \
119 { XFS_LOOKUP_EQi, "eq" }, \
120 { XFS_LOOKUP_LEi, "le" }, \
121 { XFS_LOOKUP_GEi, "ge" }
124 const unsigned char *name;
130 * uid_t and gid_t are hard-coded to 32 bits in the inode.
131 * Hence, an 'id' in a dquot is 32 bits..
133 typedef uint32_t xfs_dqid_t;
136 * Constants for bit manipulations.
138 #define XFS_NBBYLOG 3 /* log2(NBBY) */
139 #define XFS_WORDLOG 2 /* log2(sizeof(xfs_rtword_t)) */
140 #define XFS_SUMINFOLOG 2 /* log2(sizeof(xfs_suminfo_t)) */
141 #define XFS_NBWORDLOG (XFS_NBBYLOG + XFS_WORDLOG)
142 #define XFS_NBWORD (1 << XFS_NBWORDLOG)
143 #define XFS_WORDMASK ((1 << XFS_WORDLOG) - 1)
145 struct xfs_iext_cursor {
146 struct xfs_iext_leaf *leaf;
151 XFS_EXT_NORM, XFS_EXT_UNWRITTEN,
154 typedef struct xfs_bmbt_irec
156 xfs_fileoff_t br_startoff; /* starting file offset */
157 xfs_fsblock_t br_startblock; /* starting block number */
158 xfs_filblks_t br_blockcount; /* number of blocks */
159 xfs_exntst_t br_state; /* extent state */
162 enum xfs_refc_domain {
163 XFS_REFC_DOMAIN_SHARED = 0,
167 #define XFS_REFC_DOMAIN_STRINGS \
168 { XFS_REFC_DOMAIN_SHARED, "shared" }, \
169 { XFS_REFC_DOMAIN_COW, "cow" }
171 struct xfs_refcount_irec {
172 xfs_agblock_t rc_startblock; /* starting block number */
173 xfs_extlen_t rc_blockcount; /* count of free blocks */
174 xfs_nlink_t rc_refcount; /* number of inodes linked here */
175 enum xfs_refc_domain rc_domain; /* shared or cow staging extent? */
178 #define XFS_RMAP_ATTR_FORK (1 << 0)
179 #define XFS_RMAP_BMBT_BLOCK (1 << 1)
180 #define XFS_RMAP_UNWRITTEN (1 << 2)
181 #define XFS_RMAP_KEY_FLAGS (XFS_RMAP_ATTR_FORK | \
183 #define XFS_RMAP_REC_FLAGS (XFS_RMAP_UNWRITTEN)
184 struct xfs_rmap_irec {
185 xfs_agblock_t rm_startblock; /* extent start block */
186 xfs_extlen_t rm_blockcount; /* extent length */
187 uint64_t rm_owner; /* extent owner */
188 uint64_t rm_offset; /* offset within the owner */
189 unsigned int rm_flags; /* state flags */
192 /* per-AG block reservation types */
193 enum xfs_ag_resv_type {
194 XFS_AG_RESV_NONE = 0,
196 XFS_AG_RESV_METADATA,
200 * Don't increase fdblocks when freeing extent. This is a pony for
201 * the bnobt repair functions to re-free the free space without
202 * altering fdblocks. If you think you need this you're wrong.
207 /* Results of scanning a btree keyspace to check occupancy. */
208 enum xbtree_recpacking {
209 /* None of the keyspace maps to records. */
210 XBTREE_RECPACKING_EMPTY = 0,
212 /* Some, but not all, of the keyspace maps to records. */
213 XBTREE_RECPACKING_SPARSE,
215 /* The entire keyspace maps to records. */
216 XBTREE_RECPACKING_FULL,
219 enum xfs_group_type {
225 #define XG_TYPE_STRINGS \
226 { XG_TYPE_AG, "ag" }, \
227 { XG_TYPE_RTG, "rtg" }
230 * Type verifier functions
234 bool xfs_verify_fsbno(struct xfs_mount *mp, xfs_fsblock_t fsbno);
235 bool xfs_verify_fsbext(struct xfs_mount *mp, xfs_fsblock_t fsbno,
238 bool xfs_verify_ino(struct xfs_mount *mp, xfs_ino_t ino);
239 bool xfs_is_sb_inum(struct xfs_mount *mp, xfs_ino_t ino);
240 bool xfs_verify_dir_ino(struct xfs_mount *mp, xfs_ino_t ino);
241 bool xfs_verify_rtbno(struct xfs_mount *mp, xfs_rtblock_t rtbno);
242 bool xfs_verify_rtbext(struct xfs_mount *mp, xfs_rtblock_t rtbno,
244 bool xfs_verify_icount(struct xfs_mount *mp, unsigned long long icount);
245 bool xfs_verify_dablk(struct xfs_mount *mp, xfs_fileoff_t off);
246 void xfs_icount_range(struct xfs_mount *mp, unsigned long long *min,
247 unsigned long long *max);
248 bool xfs_verify_fileoff(struct xfs_mount *mp, xfs_fileoff_t off);
249 bool xfs_verify_fileext(struct xfs_mount *mp, xfs_fileoff_t off,
252 #endif /* __XFS_TYPES_H__ */